2220231044921 has 2 divisors, whose sum is σ = 2220231044922. Its totient is φ = 2220231044920.

The previous prime is 2220231044891. The next prime is 2220231044929. The reversal of 2220231044921 is 1294401320222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2143632733225 + 76598311696 = 1464115^2 + 276764^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2220231044921 is a prime.

It is a super-3 number, since 3×2220231044921³ (a number of 38 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (2220231044929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110115522460 + 1110115522461.

It is an arithmetic number, because the mean of its divisors is an integer number (1110115522461).

Almost surely, 2^{2220231044921} is an apocalyptic number.

It is an amenable number.

2220231044921 is a deficient number, since it is larger than the sum of its proper divisors (1).

2220231044921 is an equidigital number, since it uses as much as digits as its factorization.

2220231044921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 32.

The spelling of 2220231044921 in words is "two trillion, two hundred twenty billion, two hundred thirty-one million, forty-four thousand, nine hundred twenty-one".